Truck bolster



March l 1927 c. F. HUNTOON TRUCK BOLSTER Filed sept. s', 1925.

Z mf y Z JM Patented Mar. 1, 1927.

UNITED STATES CHARLES F. HUN TOON, OF SOUTH PASADENA, CALIFORNIA.

TRUCK HOLSTER.

Application filed September 3, 1925.

rlhis invention relates to improvements in trussed truck holsters of the type shown in Patent No. 1,210,478, granted January 2, 1917, and relates more particularly to improvements in the end construction. The improvements lie chiefiy in providing ond side guides of such construction that they may be made up of rolled sections so .as to permit the use of more suitable material .in the different parts, so that a tough material may be used for the side surfaces that are subjected to wear, and that a softer matew rial may be used for the end parts.

Heretofore a U-shaped casting has been used to enclose the ends of the holsters. The soft cast material quickly wears away on the wearing surfaces, and the parts are frequently broken from the shocks to which these members are subjected. Consequently,

frequent expensive renewals have been required. It is also difficult to stamp the identification and record marks in the tough skin of the cast material.

Objects and advantages are to eliminate breakage and lengthen the wearing qualities of the parts; to enable the use of softer material in the end plate, which is utilized as the place for stamping identification and record marks for the bolster; to facilitate removal and replacement of parts in bad order without the necessity of removing good parts; to provide a design in which the side plates may be forged in like patterns with the shoulders formed by upsetting, or in which the side plates may be manufactured by rolling and cut to widths; and to provide an end piece which is economical in production and easily assembled into place.

An illustrative embodiment, with certain modifications, of my invention is shown in the accompanying drawings, in which- Fig. 1 is an elevation of a truck bolster partly in section, and also showing certain of the correlated parts.

Fig. 2 is an end elevation looking from the left of Fig. 1.

Fig. 3 is a plan view of the right end of Fig. 1.

Fig. 4 is a plan view of the end guide. Fig. 5 is a side elevation.

Fig. 6 shows a modification in the manner of forming the shoulders.

Fig. 7 shows a further modification of the same.

In the improved construction, side memserial No. 54,277.

bers are rolled plates, which, of course, are

and the structure has several functions, suchv as, to form an'enclosure or pocket for the spring block; to furnish a guiding surface for engaging with the truck frames; to provide shoulders for limiting the side more ment; and owing` to the accessibility, the end plate is conveniently used as a place for marking the bolster.

Referring in detail to the drawings, thc I truck bolster 1 is a trussed structure, which extends transversely of the car and is the support for an end thereof. The upper or compression member 2 is of a channel section with upturned ends 18, to which are suitably secured the ends of the tension member 3, and the strut 4 spaces the medial portions of the upper member 2 and Athe lower member 3. Each end of the truss structure 1 thus formed, is provided with side plates or guide members 5 having shoulders 6 and riveted to the webs of the channel members 2. The spring block 7 is inserted in the pocket formed by the meinbers 5 and rests on the car springs 8, which are seated on the spring plank 9. The

spring plank 9 rests in the bottom of the if vertical slots or openings 10 in the truck frames 11, and the 1solster ends 5 also engage in and are guided in these openings 10. Longitudinal movement of the truck bolster 1 is stopped by the shoulders 6 abutting against the inner flanges 12 of the car frame opening 1Q.

In my improved type of end reenforcement I provide two rectangular side plates 5, to the ends of which are riveted the overlapping flanges 14 of the end piece 15. The shoulders 6 may be formed by upsetting as shown in Fig. 4, or as shown in Fig. 6, with the recess 16 on the side opposite the projecting shoulder 6, which form is probably more suited for rolling, or by thickening the end 17 and bending it back, as shown in 15 may be of thinner and softer material to receive the identification marks indicated in- Fig. 2.

The end structure disclosed may be made throughout of rolled sectionsV forged or bent to shape. The side pieces are alike, eliminating different parts, and one of theV parts may be renewed Without renewing the entire structure. The Wearing qualities of the bolster are improved, the marks are readily applied, and breakage is entirely eliminated.

I claim: i

In Combination, in a truck bolster, Wear plates riveted on either side of the ends of the bolster and having upset portions or shoulders foi-ined thereon, and at each end a plate having portions overlying the outer ends of the Wear plates and riveted to said plates. l 1

Signed at South Pasadena this 28th day of August, 1925.

CHARLES F. nUNTooii,` 

